[IMP] account_credit_control: multi-channel policies migration script

account_credit_control/__manifest__.py

@@ -5,7 +5,7 @@
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
 {
     "name": "Account Credit Control",
-    "version": "18.0.2.0.0",
+    "version": "18.0.3.0.0",
     "author": "Camptocamp,"
     "Odoo Community Association (OCA),"
     "Okia,"

account_credit_control/migrations/18.0.3.0.0/post-migration.py

@@ -0,0 +1,30 @@
+# Copyright 2025 ACSONE SA/NV
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from openupgradelib import openupgrade
+
+
+@openupgrade.migrate()
+def migrate(env, version):
+    cr = env.cr
+    openupgrade.map_values(
+        cr,
+        "channel_old",
+        "channel_letter",
+        [("letter", "t")],
+        table="credit_control_line",
+    )
+    openupgrade.map_values(
+        cr,
+        "channel_old",
+        "channel_email",
+        [("email", "t")],
+        table="credit_control_line",
+    )
+    openupgrade.map_values(
+        cr,
+        "channel_old",
+        "channel_phone",
+        [("phone", "t")],
+        table="credit_control_line",
+    )

account_credit_control/migrations/18.0.3.0.0/pre-migration.py

@@ -0,0 +1,18 @@
+# Copyright 2025 ACSONE SA/NV
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+
+from openupgradelib import openupgrade
+
+
+@openupgrade.migrate()
+def migrate(env, version):
+    # Preserve channel historic data from credit.control.line records
+    openupgrade.copy_columns(
+        env.cr,
+        {
+            "credit_control_line": [
+                ("channel", "channel_old", None),
+            ]
+        },
+    )